Automatic electrically-operated railway-gate.



l. BETTINARDI L A, TMP()v AUTOMATIC ELECTRICALLY OPERATED RAILWAY GATE.

APPLICATIONy FILED 1AN.'10.1916.

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NVE' TR Patented J une 11, 1918.

I. BETTINARDT & A. TALPO. AUTOMATIC LECTRTCALLY OPERATED RAILWAY GATE.

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l. BETTINARDI-& A. TALPO. AUTOMATIC ELECTRTCALLY OPERATED RAILWAY GATE.

APPLICATION FILED JAN. I0, 1916. I

-Patenfed .Tune 11. 1918.

SHEETS-SHEET 3.

NVENTHS grr/NAHD// f7; TAL/vo) I. BETTINARDI & A. TALPO.

AUTOMATIC ELECTRICALLY OPERATAED RAILWAY GATE.

APPLICATION FILED IAN. 10.1916. 1,269,043., Patented June 11, 1918.

8 SHEETS-SHEET 4.

I. BETTINARDI I A. TALPO. AUTOMATIC ELECIRICALLY OPERATED RAILWAY GATE.

APPLICATION FILED IAN. Io. 191s.

v Patented June 11.,A 19IL8.

8 SHEETSJ-SHEET 5.

I vf Tram/EL l. BETUNARULM. TALPO. AUTOMATIC ELECTRICALLY OPERATED RAILWAY GATE.

APPLICATXON FILED JAN. I, 1916. I

` Patented June 11', 1918.

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I.BETT|NARD1& A. TALPO. 4AUTOMATIC ELECTRICALLY OPERATED-RAILWAY GATE.

APPLICATION FILED 1AN.10. 1916- 269,0435 Patented June 11, 1918.

8 SHEETS-SHEET 7.

N N ma# N Egg N BY @frog/yh l. BET-TINARDI & A4 TALPO. AUTOMATIC ELECTRTCALLY OPT-:RATED RAILWAY GATE.

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Patentd J 11118 11, 1918.

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ISIDORO BETTINARDI AND ADOLFO TALPO, OF CHICAGO, ILLINOIS.

AUTOMATIC ELECTRICAIILY-OPERATED RAILWAY-GATE Specification of Letters Patent. Patented Jung 11 1918;,

Application led January 10, 1916. Serial N o. 71,331.

To all whom t may concern:

Bc it known that we, IsIDoRo BETTINARDI and ADOLFO TALPO, subjects of the King of Italy, and residents of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Automatic Electrically-0perated Railway-Gates, of which the following is a specification.

This invention relates to that class of electrically operated safety gate mechanisms for railway crossings adapted for operation by a train of cars approaching and passing the crossing, and has for its various objects:-

To provide automatic means in connection with the operating mechanisms of the safety gates of the system, whereby the automatic opening of said gates `with the passage of one railway train is prevented by the approach of another railway train closely following said rst mentioned train. The gates open automaticallyon the passage of said last mentioned train.

To provide in connection with the automatic control means of the system, a manually actuated means adapting the system for manual actuation by a station master or other authorized party at the crossing to open or close the gates lindependent of the automatic means aforesaid.

To provide a structural formation and association of parts in the series oi mechanisms embraced in the system, adapting the same for operation in a ready and certain manner. All as will hereinafter more fully appear.

In the accompanying drawings Figure l, is a plan view illustrating the general arrangement of the present invention in connection with a single railway track and a roadway crossing.

Fig. 2, is a detail plan view, partly diagrammatic, of the circuit closing mechanism `ot' the audible or bell signal of the roadway crossing, and marked 7 on Fig. 1.

Fig. 3, is a similar view of one of the circuit closing mechanisms for effecting an operation of the crossing gates of the system to a closed position, and marked 11 on Fig. 1. l

Fig. 4, is a similar View of one of the se ries of circuit opening mechanisms, by which an interruption is ee'cted in the circuit controlling the operation of the crossing gates to an open position, and marked 15, on

Fig- 1- f Fig 5, is a similar view of an auxiliary circuit closing mechanism, similar and sup-I plementary to the mechanism illustrated in Fig. 3, and marked l1 on Fig. 1. v

Fig. 6, is asimilar view of a circuit closing mechanism for effecting an operation of the crossing gates of the system to an open position and marked 21 on Fig. 1.

Fig. 7, is a similar View of an ,aiiXiliaryg circuit opening mechanism similar to fandv arrangedin series with the circuit opening mechanism shown in Fig. 4, and markedl 17l oii Fig. 1.

Fig. 8, is asimilar view of an auxiliary circuit closing kmechanism similar to' andar-r raiiged in parallel circuitwith circuit closing mechanism illustratedV in marked 21 on Fig. 1.

Fig. 9, is a similar View of another auxiliary circuit opening mechanism, constitutmg the prin'iary element of the series of Fig, 6, and:

opening mechanisms illustrated in Figs. 4;,

Fig. 13, is a detail sectional plan View of one ofthe pluralityof circuit closing mechanisms of the system. 1 l

Fig. 14;, is a longitudinal'sectional elevation of the same.

Fig. l5, is a transverse section on line m-, Fig. 13.

Fig. 1G, is a transverse secti mL-', Fig. 13. l

Fig. 17, is a detail longitudinal section on line w2-2 Fig. 13.

on on linev Fig. 18, is a detail elevation of the under side of the cover plate of the housing of the circuit closing mechanism.

Fig. 19, is a detail 'transverse section on line x3-3, Fig. 18.

Fig. 20, is a transverse section on line @ema-4, Fig. 1a.

Fig. 21, is an enlarged top view of the resilient contract finger or bar and the associated resilient prong by which it is actuated in one direction.

Fig. 22, is a detail sectional plan view of one of the plurality of circuit breaking or 4interrupter mechanisms of the system.

Fig. 23, is a longitudinal sectional elevation of 'thesame Fig. 24, is a transverse section on line 'm5-x5, Fig. 22.

Fig. 25, is a transverse section on `line x64-wf?, Fig. 22.

Fig. '26, is a transverse section on line :v7-.007, Fig.'22.

Fig. 27, is a detail elevation ofrthe operatingbar or' the circuit opening mechanism.

Fig. l2.8, .is a horizontal section on line acs-m8, Fig. 31, illustratingthe motor mechanismin the base of the housing oil a crossinggate oi' .the system.

Fig. 29, isa similar view lon line 00L-009, Figf31, illustrating the intermediate operative connections of the same.

Fig. 30, is a similar view on line 0010er Fig 31, illustrating the pole changing mechanism and accessories.

Fig. 31,is a detaillongitudinal sectional elevation of a crossing gate mechanism.

Fig. v3.2,.is a transversesectional elevation of ythe same.

Fig. 33, vis a detail elevation ot' the stationary member or element of the -pole changer of thegate mechanism.

Fig. 34, is `a section of the same on line w11-w11, Fig. 33.

Fig. .35, isa similar view on line @i12-m12, Fig. 33. v

Fig. 36, is adetail elevation of the semirotary member or element of the pole changer above referredto.

"Fig.'37,`is a section of the same on line m13 Fig. 36.

Fig. 38, is a 'similar view on line x14-0014,

Fig. '39, is an enlarged sectional elevation of the switch mechanism associated with the aforesaidpole changer, andadapted to automatically control an electric signal lampcarried on a movable arm of a crossing gate.

Fig. 40, isa transverse section of the same, on line awww, Fig. 39.

Fig. 41, is a horizontal section of the same, on line wle-m16, Fig. 39.

Fig. 42, is fan. elevation of one of the crossing gates in a down or closed position.

Fig. 43, is a similar view oit the same in an up or open position.

Fig. 44, is a detail plan of the crossing gate, with parts in section.

Fig. 45, is a detail transverse section of the main gate arm on line xl7-6017, Figs. 42 and 44.

Fig. 46, is a similar view on line :tlsm Fig. 42, of the upper part ot the gate arm.

Fig. 47, is a similar view of the lower part of vsaid gate arm. v

Fig. 48, is a detail sectional elevation of the switch mechanism, adapted for manual actuation at a station acent to the roadway crossing yto open and close the crossing gates independent of the automatic track mechanism control, said switch mechanism being shown in its normal open condition.

Fig. 49, is ahorizontal section of the same, on line {rg0-w20, Fig. 48.

Fig. '50, visa detail elevation, similar to Fig. 48, and showing the parts in a closed condition.

Fig. 151, is a 4sectional elevation of the station at the roadway crossing, :in which are located the manually actuating mechanisms of the System.

Fig. 52is a front elevation of the vcasing for the manual switch mechanism aforesaid, and illustrating the operating means thereof.

,'Fig. 53, is a diagrammatic view, illustrat-ing the arrangement'of the various circuits o'fthe system.

Similar reference numerals indicate like parts in the several views.

'lihe present signaling and sai'etygate system is adapted for installation npon a single track, see Fig. 1, ora pair of parallel tracks, see Fig. 53, crossing an ordinary roadway, or if desired may be installed on any number of tracks crossing said .roadway or one or more intersecting tracks of another railway. The duplication of tracks in the last mentioned instances requiring a duplication of the electrical `actuating mechanisms ot the iirst mentioned tracks and an inter-connection of portions of said mechanisms to coact in keeping the crossing gates closed during periods of danger.

Accordingly the present system as applied to a double track railway and as illustrated in Fig. 54 will comprise detail formation and association of parts as tollows:-

3 designate safetygates, hereinafteidescribed in detail, arranged-at the respective sides of the tracksl and 2, and adapted to-present a barrier at the roadway aforesaid during a period of danger due to the passage of a railway train.

4 designates an electric'battery or other usual source of electro-motive force, arranged adjacent to the roadway crossing and having supply and return conductors '5 and 6, connecting said lbattery 4 with series ,of

circuits of the present system hereinafter described. As usual in the present class of signaling systems, the supply or main line 5 will branch to different parts of the system to supply electro-motive force to the different independent circuits of the system.

7 designate a series of four circuit closers, each one of which is arranged adjacent to an individual track rail of the tracks 1 and 2, and adapted to be moved to a closed position by the wheels of a train of cars passing along the track toward the crossing to be guarded. Each of said circuit closers is disposed a proper distance away from the crossing, say one mile and has one of its insulated terminal or contact points in electrical connection with the main supply line 5 aforesaid, while its companion terminal or contact point is in electrical connection with a line wire or conductor, 8, extending to an automatic switch 9 in the housing of the gate 3, and from said switch to a signal bell 10 disposed in an elevated position above the aforesaid gate housing, and adapted to give an audible signal while the aforesaid circuit closer 7 remains in its closed condition as hereinafter more fully described.

11 designate a series of four circuit closers, each one of which is arranged adjacent to an individual track rail of the tracks 1 and 2, and adapted to be moved to a closed position by the wheels of a train of cars passing along the track toward the crossing to be guarded. Each of said circuit closers is located a distance much nearer the crossing than the heretofore described circuit closer 7 of the bell 10, and so that said bell may have an extended period of action and give warning of an approaching train before the closing of the gate or gates 3, and to such end the distance of each circuit closer 11 from the crossing may be two hundred yards, more or less. One of the insulated terminal or contact points of each circuit closer 11 is in electrical connection with the main supply line 5 aforesaid, while the companion terminal or contact point is in electrical connection with a line or conductor 12 which extends to an automatic pole changer 13 in the housing of the safety gate 3, and from said pole changer 13 to an electric-motor mechanism 14 by which the arms of the gate are moved to a down or closed position, as hereinafter described in detail.

In the present system, the pole changer 13 aforesaid, is operatively connected with the gate closing and opening mechanisms in manner hereinafter described in detail, and is adapted to effect a reversal of the direction of the electric current to the electric motor 14, and so that as the gate arm reaches its final down or closed position, the pole changer 13 will have automatically shifted,

to change the direction of the electric cur-i rent to motor 14, and the same lwill be in condition to effect a movement of said gate arin'to an up or opened position, and vice versa.

11 designate a secondary series of circuit closers, the counterpart of the circuit closers 11 just described, both as to arrangement and actuation, and connected in parallel therewith with the line wires 5 and 12 as shown in Fig. 53. Each of said circuit closers 11 is located nearer the crossing than its companion circuit closer 11 afore-4 said, and is adapted to act auxiliary thereto in effecting a full closure of the crossing gates in cases where the same may be in a partly closed condition, which may occur where trains run often, as well as back and forth, in the` zone of the present system. Where conditions require further duplication, other auxiliary circuit closers, similar to the aforesaid circuit closers 11 and 11 may be inserted in parallel with the others in the aforesaid, lines 5 and 12.

15, 16 and 17 designate one group of a series of four groups of normally closed circuit interrupters or breakers associated with the railway tracks 1 and 2 and located on either side of the roadway crossing and intermediate the same and the primary series of circuit closers 11 above described. Each circuit interrupter, 15, 16 and 17 of the aforesaid group is arranged adjacent toa-n individual track rail of the railway track 1, and to the left of the roadway crossing as shown in Fig. 53, and said group of interrupters are adapted to be serially moved into an open position bythe wheels of a train of cars passing to the right on track 1 toward the roadway crossing to be guarded.

151, 161, 171, and 181, designate another group of the series of four groups of normally closed circuit interrupters aforesaid. Each circuit interrupter of the group is arranged adjacent to an individual track 'rail of the railway track 2, and to the left of the roadway crossing as shown in Fig. 53, and are adapted to be moved into an open position by the wheels of a train of cars passing to the right on the track 2 toward the roadway crossing aforesaid.

152, 162, 172, 182 designate another group of the series of four groups of circuit interrupters aforesaid. Each circuit interrupter of the group is arranged adjacent to an individual track rail of the track 2, and to the right of the roadway crossing as shown in Fig. 53, andA is adapted to be moved into an open position by the wheels of a train of cars passing to the left on track 2 toward the roadway crossin aforesaid.

153, 163 and 173, esignate another group Clt.

of the series of four; groups of circuit interrupters aforesaid. Each circuit interrupter of the group is arranged adjacent Yto -an individual track rail of the railway track :1, and to the right of the roadway crossing, as shown in Fig. 53, and is adapted to be moved into an open posit-ionby the wheels of a train of cars passing ,to the left `on track 1 toward the roadway crossing aforesaid.

As illustrated in diagram View lFig. 153, the circuit interrupters of v the four groups above describedare connected in seriesby a line wire or conductor 19, and `at the respective ends, the connected groups are electrically connected with circuit interrupters now to-be described. y

18 designates a normally closed circuit interrupter, Asimilar to the circuit interrupters above described, and located between the circuit interrupter 17 of thelirst group aforesaid and the roadway crossing. The interrupter 18 is arranged adjacent to an individual track rail of the railway track 1 and to the left of the roadway crossing and isadapted torbe moved into an openposition bythe wheels of atrain of cars passinggto the left on the track -1 and in a direction away from the roadway crossing. @ne terminal point of said interrupterhas electrical connection with the main line 5, while'the otheriterininal of said interrupter has electrical connection by line wire 19 aforesaid with the neXt adjacent circuit interrupter -17 of the seriesof-four groups of i-nterrupters above described.

183 designates a normally closed circuit interrupter, similar to fthe circuit interrupters above described, and located between the circuit interrupter 1737of thelast group aforesaid, and the lroadway crossing. The interrupter 183 is arranged adjacentftoan individualitrack rail of the railway track 1 andto the right of the roadway crossing, and is adapted to be moved into an open position bythe wheels of a train of` cars passing to the left on the track 1 and in ardirection toward the roadway crossing. @ne terminal of said interrupter 183 is electrically connected-in .series with theadjacent interrupter 173 ofthe last group aforesaid. The other terminal of the interrupter 183 is connected in series, by line wire 20, vwith the groups of vcircuit closers now to be described 21, 22, 23, and 24 designate a series ofrfour circuit closers arranged jadjacent to individual track rails ofthe tracks 1 :and 2, and adaptedtobe movedintoa closed position bythe wheels of atrain o f cars passi-ng along the tracks toward the roadway crossing aforesaid.

211, 221, 231, and 241 designate a cornpanion series of four circuit closers arranged adjacent to individual track rails of the nece-naa tracks'1 and 2 and adapted to be moved into aclosed position-by the wheels of a train of cars passing along the tracks away from vthe roadway crossing aforesaid.

As illustrated in `Fig. 53, a Apair of the aforesaid circuitclosers are associated with each group of the `four groups of circuit interrupters above described, and alternating therewith preferably in the manner shown. Each pair, 21, 211; 22, 221i; Q3, 231 andQl, 241 of said series of circuit closers are arranged in parallel between the line wires or conductors 2O and line wires orconductors 25, extending to thei terminal or contact point 101, of the pole changer of the gate mechanism, to effect an operation of thesanie to raise or open the crossing gates,

1t is within the scope of this part of the present invention to increase or diminish the number of circuit closers and circuit interrupters heretofore described, in accordance with the extent of automatic protection required at the particular place to be guarded, and also in accordance with the number of tracks at a particular crossing, and tl e eX- tent of movement oftrains-back and forth past the crossing. 1n this connection. an arrangement adapted for a single `railway track isshown in Fig. 1 of the drawings.

26 designatesa circuit closer, hereinafter described in detail, arranged within a st: tion Yhouse or other inclosure adjacent to theroadway crossing. Said circuit closer is adapted yfor manual actuation and is arranged in an individualcircuit which embraces zthe main line wire 5 aforesaid, and azline wire or conductor 27, .shown in vFig. 53. rlhe circuit closer 2G has line connections withthe terminals of the pole changer of the ygate operating mechanism, hereinafter described. Such provisionenables the station master or other attendant at the roadway crossing, toetfect an opening or a closing of the lgates independent of the automatic mechanism, rheretofore referred to.

28 designates a signal lamp disposed adjacenttofthe outer zone of the gate closing portionof the system, and adapted to enable a station master or other attendant adjacent to the roadway crossing to signal the engineer of lan approaching train. To such end .said signal lamp ,will 4,be arranged in an individual circuit extending from the crossingto said lamp, with its controlling switch QQarranged in the station house or inclosure above mentioned.

The series of `circuit closers and circuit interrupterS associated with the railway tracks in thepresent system, are Ipreferably housed and supported by the following means .30 designates an `elongated housing securedyinadjacent and spaced relationto one of the ytrack rails, andI such y.housin g Amay be individual to a remote circuit closer, such as the circuit ,closers 7, aforesaid, or said housing may be of an extended formation and adapted to contain a series of circuit closers and an alternating series of circuit interrupters hereinafter described. In the construction in Figs. 13 to 26, inclusive, the housing 30, will comprise one or more elongated plates 31, having a bottom flange 32 by which they are secured to the track ties, to constitute the outer vertical wall of thel housing 30.

33 designates a coupling plate for connecting adjacent ends of the wall plates 3l together in an extended structure. The coupling plate 33, is adapted in addition, to afford a substantial support for one of the hereinafter described operating springs of an individual circuit mechanism.

34 designate one or more elongated plates, similar to the plates 31 and having spaced relation thereto, to constitute the inner vertical wall of the housing 30. Said inner wall is formed with one cr more openings for the movement of one or more of the hereinafter described laterally shifting op erating bars of the circuit closers, or like bars of the circuit interrupters, heretofore referred to.

35 designates the bottom plate of the housing 30, preferably formed with a series of drainage openings 36, for the outflow of any water collecting in the housing.

37 designates the top or cover plate for the housing 30, formed in sections where an extended housing is to be covered, and provided on its under surface with depending lugs 38, adapted to position the cover on the side ivalls of the housing 30, and to receive transverse attaching screws by which the cover is secured in place in a removable manner, as shown in Fig. 17, so that access may be had to the contained parts for inspection and repair.

39 designate supports for the line wires or conductors of the system and fixed on the interior facev of the wall 31, and near t-he top of the same as shown in Figs. 22, 23 and 24.

The series of circuit closers disposed along the railway tracks are of a counterpart construction, and each circuit closer will have a detail construction as follows 40 designates an operating bar arranged in an opening in the inner wall 34 of the housing 30 and adapted to have movement through said opening. Said operating bar 40, is of a U shape in cross-section for the purpose hereinafter stated, and is held from longitudinal movement with relation tothe housing 30 and adjacent track rail, by guide pins or lugs 41 on its under side and having movement in transverse guide slots i2 in guide plates 43 secured in the bottom position of theV housing 30, as shown in F 13` With the described connection a free lateral floating movement of the operating bar` 40, can take place, and only limited in extent by the length of the aforesaid guide slots 42.

designates a spring secured at one end to the inner wall 34 of the housing 30, by bolts 45 or like fastening means. The free end of said spring is provided with a guide pin or stud 46 stud 46 adapted for guiding engagement in an elongated guide slot 47 at one end of the operating bar 40 aforesaid, and adapted to yieldingly hold said end of the operating bar 40 away from the adjacent track rail as illustrated in Figs. 13 and 14.

48 designates a spring similar to the spring 44 above described, and secured at one end to the outer Wall 31 of the housing 30 by bolts 49, or like fastening means. The free end of said spring 48 is provided with a guide pin or stud 50 adapted for guiding engagement in an elongated guide slot 51 at the other end of the operating bar 40 aforesaid, and adapted to yieldingly hold said end of the operating bar in close relation .to thi;J1 adjacent track rail, as shown -in Figs. 13 an 14.

With the above described formation and f association of parts, theflanges of the wheels of a train of cars moving to the right in Fig. 13 will act against-the inner face of said operating bar to move the end of the same controlled by springv 48 away from the track rail and 'establish electrical connection between the kcontact points hereinafter described in detail.

ith a train of cars moving in a direction to the left in Fig. 13, the flanges of thev car wheel will ride in the channel providedv by the U shape of said operating bar 40,

and move said bar into close parallel rela-r tion to the adjacent track rail against the resilient stress of the spring 44. In such last mentioned operation, the circuit embracing the contact points of the device are not brought into electrical connection and said circuit remains broken.

The advantage resulting from the above described construction is that by asimple end to end reversal of the circuit closer, they same can be used for closing a circuit when a train 1s passing 1n one direction or the other, and with a corresponding inaction of the circuit closer when the train is moving in a reverse direction to that for which the circuit closer is placed.

52 and 53 designate a pair of contact points or terminals secured in an insulated manner on the vertical wall 31 of the housing 30 aforesaid, and forming a break in the line wire or conductor with which the circuit closer is associated.

54 vdesignates a resilient contactmember secu-red to the outer wall of the housing 30 aforesaid, and having electrical connection with the contact or terminal. 52 aforesaid, and adapted when flexed to contact with the other terminal 53, to establish communicationalongtheline Wire er conductor aforesaid.

55 designates a resilient bearing finger secured at one end to the operating bar s() aforesaid, and adapted for bearing against the resilient contactmember 54k to yieldingly transmit thereto the movement of said operating bar Zi0 in one direction. rlhe movement of said parts in the otlier direction is attained by the resiliency of the contact member 54: and bearing finger 55.

56 designates an electrosmagnet associated with a free portion of the contact member 54, which is adapted' to constitute an armature for said electro-magnet. rlllhewindings of@l said electro-magnet are in circuit with the line'vvire of the circuit closer, and the arrangement is such, that as the resilient ContactV member 54C is moved outward tb close the circuit between the terminals 52, 53,said lcontact member 54' will beheld by themagnetic attractionv of the electronnagnet in such closed condition,l regardless of the return of the operating bar l0 t0v its normal position and until the circuit is broken by" the poleI changer l?)v of thesy's-y tem. ln the described circuit closing mech# anism, the normal conditionl ofi parts' is in openl circuit.

The series of interrupiers disposedalong the railway tracks are of a'counterpart construction, and each circuit interrupter Willhave a detail construction as folloivs2- 57 designates anfoperating bar associated With an openingin'the inner Wall Se of the housingY 30 and'adapted to havey movement through thesame. Said operating bar '57 is of a U shape in cross-section for the purpose hereinafter stated, and is heldfrom longitudinal movement With `relation to the housing 30 and adjacent track rail, by guide pins or lugs 58 on its under side and having" movement in transverse guide slots 59 in` guide plates 60 secured inth'e bottom por# tion ofthe housing 30, as shown in Figs. 22 to 27, inclusive. With the described corrnection a free lateral floating movement of the operating bar 57can takeplace, and only limited in eXtentby the length of the aforesaid guide'slots 59.

61 designates a spring secured 'at one end to the innertvall 34 of the housing-30 by bolts 62 or like fastening means. Thefree end of said spring is provided Withl a guide pin or stud 63 adapted for guiding engagement in an `elongatedguide slot 64; atone end of the operating bar 57 aforesaid, and adapted to yieldingly hold said'end of thel operatingbar 57 away from the adjacent track rail, asiillustrated yin Figs. 22 and 23.

65 designates a spring similar to the spring 6ly above*described,` and secured `at oneend te.v theioter Wall 31y of the housing'() by bolts 66 or like fastening means.y The-'free end of said spring 65 is provided With a guidepin or stud 67 adapted for guiding engagement in an elongated guide slot 68 at' the other end of the operating bar 57 aforesaid, and adapted to yieldingly hold said end of the operating bar in close relation to the adjacent track rail, as shown in Fig. 22.

The function and operation of thewoper ating bar 54tand its described accessories, 1s similar to the operating bar 4l() and its accessories of the circuit closer, heretofore described in detail.

69 designates a contact point or terminal secured" in an insulated manner on the outer vertical Wall of the housing 30, and constituting one end of a break iirthe'line'w'ire or conductor with which the circuit interrupter is associated'. Y p

70 designates a resilient contact member secured in an insulated manner on theopcrating bar 57 aforesaid, and adapted for normal resilient contact2 With the terminal 69 above described. Said contact member is in electrical connection with the other end ofthe aforesaid break in the line Wire or conductor, so that the normal condition of the parts is in closed circuit.

With the' above describedconstruction the flanges of the wheels ofa railway train moving to the left in Fig. 22, Will ride `in the channel provided by the U shape of said operating bar 57 and move said bar into close parallel relation to the adjacent track rail against the resilient stress ofthe spring 6l, and cause an interruption in the line Wire or conductor aforesaid.

With a railway train moving in a dire@ tion to the right in Fio'. 22., the Wheel flanges Will act against the'inner Vface of said operating bar to move the end of the same controlled by the spring 65 outwardly, and no interruption in the circuit will take place.

The plurality of crossing gates 3 of the system, will each com rise a closed b'o'X or housing of any usua and suitableforin, preferably provided with hinged eiidwalls 7l, to afford convenient access to the` inclosed mechanisms of the'gate.

72 designates the bottom or base member of the housingv provided with a ductorpasf, sa ge for the line Wires 0r conductors 6, 8,v 9', l2. and heretoforedescribed," and by which the mechanism Within the gatehous- .ing` is controlled. l

7 3 designates an electric niotor'of thedirect current type and of any usuaf ferm, see Figs. 28. 3l and 32, secured' toi-theblottom 72 of the gate housing Aand provided with a drivingpinion 74 on its armature shaft. p

75 designates antintermediate shaft:jour` naledin the 'side Walls lof the Ygate :honsingf and provided' With a'gear Wheel 76liaving` operative engagement with the pinion 74 aforesaid. Said shaft 75 also carries a pinion 77. i

78 designates a counter-shaft also journaled `in the side walls of the gate housing and provided with a gear wheel 7 9 having` operative engagement with the pinion 77 aforesaid. Said countershaft 7 8 also carries acrank arm 80, adapted for operative connection with the movable portions of the gate now to be described.

81 and 82 designate a pair of rock shafts journaled in horizontally spaced relation in the side walls of the gate housing, and having crank arms 83, 84, operatively connected by links 85 and 86 with the aforesaid crank arm 80 of the countershaft 78, above described. Said rock shafts 81, 82, extend out through the side walls of the gate housing andv carry the main and auxiliary gate arms, hereinafter described in detail.

ln the preferred construction shown, the connection between the rock arm 84 and its link 85 and the rock arm 80 is by means of a pin and elongated slot formation 85 as shown in Fig. 31. Said construction is adapted to permit an opening of auxiliary gate arm 128, hereinafter described, when said gate arm is in a closed condition, and the liability to damage of the automatic mechanism of the gate is prevented, Which would otherwise occur if an impatientpedestrian attempts to raise the auxiliary gate and pass by.

87 designates a lateralpin 'or tappet carried by the crank arm 84: aforesaid, and is adapted for intermittent operative enga-gement with the movable element of the pole changer 13 hereinafter described.

88 designates a movable-contact arm carried by the rock shaft 81 and forming the movable member of an electric switch by which an electric signal lamp on the main gate arm is controlled, as hereinafter set forth.

89 designates a pair of insulated contact points carried by the movable arm 88 aforesaid, and forming the terminals of one of the line wires or conductors 90 which include the signal. lamp 91, of the main gate arm in circuit. y

92 designates the fixed member' ofthe switch just referred to, provided Vwith a pair of insulated lsegmental contact plates 93 arrangedin spaced relation and is adapted for individual contact with the contacts 89 aforesaid, in one position of the arm' 88 carrying the same. The contact plates 93, are connected with the main supply and return wires 5 and 6 of the system in any usual manner. In actual use, the pairs of Contact' members 89 and 93 are out of electric con-v nection when the gate arms are in the raised and open position, and are automatically brought` into contact, tov supply current to the signal lamp 91 of the gate arm as the same moves into a lowered or closed position. i v

94 designates an upright tubular vpost attached to the top of the gate housing and carrying at its upper end the signal bell 10 heretofore referred to. Said tubular post carries the line wires 95 embracing said bell and connected to switch 9, yheretofore referred to, and to the return line 6 of the system. v

The switcher circuit interrupter 9 aforesaid, preferably comprises a pair of spaced and insulated terminals 96 connected respectively with the line wires 8 and 95- aforesaid, and a pivoted contact arm 97, bridging said terminals to normally maintain the line in closed circuit. A'In the practical oper# ation -ofthis part of the system, the `contact arm 97 is intermittently and momentarily actuated to break the circuit. zas a preliminary to anv ultimatebreak in the circuit at the track circuit closer 7 heretofore described. The actuation of the contact arm 97 is automatically eected by .a trip 'dog A98 carried by the ysemi-rotary' member of the pole changer 13, hereinafter described. y

99 designates the supporting base of the xed member of the pole changer 13, heretofore referredl to,- and preferably of the circular form shown. Saidbase carries the above mentioned terminal points of the line wires -8 and 95 andthe contact arm 97 associated therewith, and-in addition the following terminal orl contactpoints 100and'1'101 designate pair of outer terminals or contact points arranged in circularly spaced relation on the base 99 and havingindividual connectionwith and forming the respective terminals for the line wire 12 and 25, of the track circuit closers heretofore described.

102, v103 and 104 designate an inner series of three terminal or Contact pointsarranged in concentric relation yto the aforesaid outer contact points 100, 101, and in circularly spaced relation on the base 99. The middle terminal102 has line wire connection 105, with the field of themotor"1l, while the companion terminals have wire connections 1 06 and 107 with the armature brushes of sa'idmotor''14,.r in-manner usual to reversible electric motors.

l108 designates abearingshaft or arbor having fixed central relation inthe insu-` lating-base99 aforesaid, and is adapted to pivotally support the'mjovable or semi-rotary member of the pole changer no w to he described.'

109 'designates'a disk o f insulating material having' 'a central orifice for journal engagement on the arbor 108 aforesaid, and

provided with a pair of prongs 110 in spaced i relation at its periphery and adapted for intermittent operative engagement with the beforedescribedpin or tappet 87 of the'gate operating mechanism. With the described association of parts, asl the tappet 87= nears the end of itsmovement in one direction it will engage one of the prongs' 110, andl impart thereto and to the disk 109" a partial rotation in one direction. In like manner as the tappet'87A nears the end of itsmovement inthe other direction it willf enga-ge the other of said prongs 110 and impart thereto and to the disk 109 a partial rotation in the other direction. AsI al result of the above, the'pole changer receives intermittent actuation in one direction or the other to reverse thev directions of the operating circuitsv of the electric motor 14, so that the same will run inV oneor the other directions: in accordance with the conditions prevailing in the' system.

111 and 112 designate a pair of segmental cont'act'plates securedf to the insulating disk 109 aforesaid, and,l`4` adapted for electrical contact with the aforesaid vterminals of the base 99 in manner hereinafter stated.

113 designates a radially extending contact finger formi-ng apart of? the contact plate 111 and associated with outer pair of terminal Contact points 100,', 101, and adapted for alternate Contact therewith in accordance withthe position of the movable member of the pole changer' 13. In the construction shown, the contact plate 112, is adapted to electrically connect the terminal 102 of the line wire 105 of the motor field',

f one or the other ofthe terminals 103 or 104 of the line wires 106 and 107 to the motor brushes in accordance withy the position of the movable member of the pole changer. In like manner,the Contact plate 111 and its contact finger 113 a-re adapted t o electrically connect one or the other of the terminals 100 or 101 of the track lines 12 and 25 with one or the other of the terminals 108 or 104, in accordance with the position of the movable member of the pole changer. With the describedassociation of parts, the circuits of the electric motor 14, are automatically changed and the motor caused to run in the direction required, to eitheropen or close they crossing gate, upon the closing of a particular track circuit closer of the system.

114 designates a spring surrounding' the arbor 108 aforesaid, and adapted to resiliently hold the movable member of the pole changer in proper operative position.

The' trip dog 98, heretofore described, is pivoted on the disk 109 aforesaid, in operative relation to the pivoted contact arm 97 aforesaid, and said trip dog 98 is preferably of the' gravity type-shown in Fig. 36.

115 designates a resilient arm carriedv on the rock shaft- 81 of the main gate arm aforesaid, and adapted in the turning move- Ine-nt of said? rock shaft, in one direction or the other, to come in contactv with the ends of a segmental yoke 116, secured to an inner w-allof the gate housing. And with a view to'retarding the final movement of said rockshaft 812,- andf its accessories, the yoke 116 will be formed with inclined portions 117 adapted to afford bearings for the free end ofi the resilient arm 115, to frictionally retard` the final movement ofA the parts.

rIhe main gate arm heretofore referred to, preferably comprises a detail construction as follows z- 118 designates a yoke or frame having iXed attachment to the rock shaft 81 aforesaid, and carrying. a suitable counterbalance weight 119, as shown in Figs. 42, 43l and 44.

120 designates a pair of gate rails secured. to the yoke 118 aforesaid, and to intermediate reinforcing bracket 121, and arranged in spaced relation to provide an interme'diate space for the reception of a series o'f depending links or pickets 122, which are pivoted at their upper ends between said rails, and constitute a visible portion of the gate arm.

123 designate rails pivotally attached to the lower ends of the pickets 122, and constituting another visible portion of the gate arm. The described pivotal connection of the parts permit the same to fold compactly together as the gate arm'moves into a raised or open position.

185 designates a containing channel formed in one of the gate rails 120 aforesaid, and in one of the yoke members 118 aforesaid, and adapted to contain the line wires 90 of the signal lamp 91, heretofore described and which is carried on the free end of the main gate arm, said channels or passages are provided with removable covers 126, to afford convenient access to said line wires, as. illustrated in Figs. 46 and 47.

127 designates a channel or passage formed in an end portion of the rock shaft 81 of the gate arm, and adapted to contain a portion of the line wires 90 aforesaid, which extend from the terminals 89 before described', to the lamp 124, and as illustrated in Figs. 39, 40 and 41.

128 designates the auxiliary or short arm of the crossing gate, associated with the sidewalk of the crossing to govern the passage of pedestrians along the same. Said arm 128 is fixed to an end of the rock shaft 82 before described, and is adapted to open 'and close in unison with the main gate arm heretofore referred to, andarranged adjacent to the roadwaycrossing of the system. Said house is adapted to contain the auxiliary controlling portion of system, and which 1 is capable of manual actuation by a station 3 I above referred to, arranged -in the` casing master or other authorized person.

130 designates a closed casing'arranged within the house 129, and provided with an `insulating base plate 131, to which is vattached a local switch 132, and an'electromagnetic circuit closerv 26, heretofore' referred to, and now to be described in detail.

133, 134 and 135 designate aseriesv of conducting plates secured to the insulating 15 base 131, in separated relation as shown in Fig. 48. The conducting plate 133, is connected with the main' supply line 5 of theY system, while the conducting plate 135 is connected by a line wire or wires 137, forming branches of the line wires 12 and 25 of 138, and is electrically connected with the windings `of an electro-magnet 139, and

' plate 133 aforesaid,

throughsaid windings with the conducting by a line Wire 136, as illustrated in Fig. 48.

140 designates la contact arm, preferably of the weighted type shown in Fig 49, and l pivoted in an electrically conductive manner on the conducting plate- 135, and the armoved down by hand into contact with the terminal or contact 138 aforesaid, electric communication will be established between the plates 134 and 135, and the electro-mo- *tiveV force will pass to the terminals 100 or 101 of the pole changer, to effect either an opening or closing movement of the crossing gate as the case may be.

141 designates an armature carried by the contact arm 140, and adapted to be held-in contact with the core of the electro-magnet 139 while the-electric .current is passing Ato such end the series secondary circuit therethrough. Y

The normal position of the contact arm 140, is in open circuit, as illustrated in Fig.

` 48 and it is moved into a position of closed' circuit,'illustrated in Fig."50 by hand and is heldtherein by the electro-magnet 139 during the period in `which current is passing through said' electro-magnet to eifectan the contact arm 140 automatically moves back into its normal open circuit position. 142 designates a lateral operating stein on the free end of the contact arm 140, eX-

tending and through an opening in the eration of the contact arm. i

132 designates the local electric-switch 130, and interposed in a branch circuit 143 which extends to and is connected tothe line 'Wires 90 of the signal lamp 91 of the crossing gate, to provide means for the manual' control of the same from the roadway crossing. l' y The switch 29 of the track signal lamp 28 heretofore described will be arranged in the house or inclosure 129, as illustrated in Fig.- 52.

Operation V0; 7L-e system. i

The mode of operation of the signal bell #at the roadway crossing; the automatic closing of the crossing gates and the subsequent opening of the same, as well as the automatic control of the signal lamp on the crossing -gates is fully set forth in the detail description of parts and accordingly further description ofthe operation of the system l will be confinedto the functions of the auX- 'iliaryvcircuit closers andfcircuit interrupters v'disposed alongv the railway tracks of the system.

n In the event of railway trains running in opposite direction toward the roadway crossing, vor of two or more railway trains following each other closely upon the same track, or of divers railway trains moving within the zone of action of the system, the opening ofthe crossing gates due to the passage ofthe -first trainv past the-normal opening point for an opening operation of the gates,

is neutralized by one or more of the circuit interrupters 15,116, 17, etc., by any succeeding train entering the zone of action in one direction or the other and upon either of the railway tracks, andthe `crossing gates will remain in' their closed condition until the last train is leaving such zone of action, and

closers 21,'22, 23, 24', arranged in a reversed direction to and in parallel `circuit with the-series of primary circuit closers 21,

`,22, 23`and 24, are employed and vas a particular secondary circuit closer is operated by a railway train leaving the zone of action to establish the opening circuit of the gate mechanism to eifect an opening of the crossing gates.

Having thus'fully described our said in- Y rvention what we claim as new and desire to secure by Letters Patent, is p 1. `In an electricallyT actuated gatefor railway crossings, the combination of a movable gate arm, a motor operatively connected thereto, a pole changer associated with said vvdisposed along the the pole changer,

motor, and a plurality of electro-magnetic p relation for actuation by trains moving in opposite directions respectively andconnected with opposite terminals of the pole changer, substantially as setforth.

2. In an electrically actuated gate for railway crossings, the combination of a movable gate arm, a motor operatively connected thereto, a pole changer associated with said motor, a plurality of electro-magnetic circuit closers, operative in one direction only, tracks for actuation by trains moving in opposite directions respectively and connected with opposite terminals of the pole changer, and a circuit interrupter operative in one direction only, disposed along the tracks and adapted to interrupt the circuit of one of the circuit closers aforesaid,

substantially as set-forth.

3. In an electrically actuated gate for railway crossings, the combi-nation of a movable gate arm, a motor operatively connected thereto, a pole changer associated with said motor, a plurality of electro-magnetic circuit closers, operative in one direction only, disposed along the tracks and connected with opposite terminals of the second plurality of electro-magnetic circuit Y closers, operative in one direction only, disposed along the tracks for actuation by trains moving in opposite directions respectively and connected to opposite terminals of the two pluralities of circuit closers being arranged in reverse directions, anda series of circuit interrupters, operative in one direction only, disposed along the tracks and adapted to interrupt the circuits of the circuit closers" aforesaid, substantially as set-forth.

4. In an electrically actuated gate for railway crossings, the combination of av movable gate arm, a motor operatively connected thereto,.a polel changer associated with said motor, a plurality of electro-magnetic circuit closers, operative in one direction only, disposed along the tracks in reversed` relation for actuation by trains moving in opposite directions respectively and connected.

with opposite terminals .of the ypole changer, an electro-magnetic switch arranged adjacent to the crossing and adapted for manual Y closing, an indivi lual circuit embracing said switch and the opposite terminals of the pole changer, substantially asl set-forth.

5. In an electrically actuated gate for railway crossings, the combination of a movable gate arm, a motor operatively connected thereto, a pole changer associated with said motor, a plurality of electro-magnetic circuit. closers, operativejin one. direction-only, disposed along the tracks and connected with opposite terminals of the pole changer, a cirpole changer, a`

cuit interrupter, operative in one direction only, disposed along the ltracks and adapted to interrupt the circuit of one of the circuit closers aforesaid, an electro-magnetic switch arranged adjacent to the crossing and adapted. for manual closing, and an individual circuit embracing said switch and the opposite terminals of the pole changer, substantially as set-forth. t t

6. In an electrically actuated gate for railway crossings, the combination of a movable gate arm, a motor operatively connected thereto, a pole changer associated with said motor, a plurality of electro-magnetic circuit closers, operative in oned-irection only, disposed along the tracks and connected with vopposite terminals of the pole changer, a

terrupt the circuits of the circuit closers aforesaid, an electro-magnetic switch ar ranged adjacent to the crossing and adapted for manual closing, and an individuall circuit embracing said switch and the opposite terminals of thefpole changer, substantially as set-forth. i

7. In an electrically actuated gate for raill way crossings, the combination of a movable gate arm, a lmotor operatively connected thereto, a lpole changer associatedwith said motor and ycomprising a fixed member and a semi-rotary member operatively connected with the gate arm, and a plurality of electromagnetic circuit closers, operative in one direction only, disposed along the tracks in reversed relation for actuation by trains moving in opposite directions respectively and connected with opposite terminals of the fixed member of the poley changer,substan tially as set-forth. t

8. Inan electrically actuated gate for railway crossings, the combination ofa movable gate arm, `a motor operatively connected` thereto, a pole changer associated with said motor and comprising a fxedfmember and a semi-rotary member operatively. connected Awith the gate arm, a plurality of electromagnetic circuit closers, operative in one direction only, disposed along the tracks and connected with opposite terminals of the fixed member `of the pole changer, and a lcircuit interrupter, operative in one direction only, disposed along the tracks and adapted to interrupt the circuit of one of the circuitclosers aforesaid, substantially as setforth. c

9. In an electrically actuated gate for railway crossings, the combination of a movable gate "arm, c a motor operatively connected thereto, a pole changer associated with said motor and comprising a fixed member and ,a semi-rotary member operatively connected with the gate arm, a plurality of electromagnetic circuit closers, operative in one direction only, disposed'along the tracks and coimected .with opposite terminals of the Xed member of the pole changer, a second plurality of electro-magnetic circuit closers, operative-inA one direction only, disposed along the tracks and connected with opposite terminalsof the fixed member of the pole' .changenthetwo pluralities of circuit closers being arranged in reverse directions, vand a series of circuit interrupters, operative -in-one direction only, disposed along the tracks and adapted to interrupt the circuits of thev circuit closers aforesaid, substantially .as set-forth.

10. 'In anv electrically actuated gate for railwayvl crossings, the combination of ya -movable gate arm, a motor operatively con- -nected thereto, a -pole changer associated with said motor, and a plurality of electromagnetic circuit closers, operative in one direction only, disposedvalong the tracks in .revers'edrelation for actuation by trains moving in oppositey directions respectively and connected ywith opposite terminals of "thevpo'le changer,,each circuit closer comiprlsing in parta floating operating bar opferatively'.'` .connected to a contact member adapted toy close the' circuit of the mechanism, substantiallyas set-forth.

11. In an electrically .actuated gate for railway crossings, the combination of a movable'r-gate arm,` a'motor operatively connected thereto,l al pole' l changer associated with said motor, a plurality of electro-magnetic circuit closers, operative infone direction only, disposed along the tracks and connected with opposite terminals of the pole changer, and a circuit interrupter, operative in one direction only, disposed along the tracks and adapted to interrupt the circuit of one of the circuit closers aforesaid, each circuit closer having a floating operating bar operatively connected to a contact member adapted to close the circuit of the mechanism, substantially as set-forth.

12. In an electrically actuated gate for railway crossings, the combination of a movable gate arm, a motor operatively connected thereto, a pole changer associated with said motor, a plurality of electro-magnetic circuit closers, operative in one direction only, disposed along the tracks and connected with opposite terminals of the pole changer, a second plurality of electro-magnetic circuit closers, operative in one direction only, disposed along the tracks and connected to opposite terminals of the pole changer, the two pluralities of circuit closers being' arranged'inlreversedirection, and a series oef-circuit interrupters, operative in .one direction only, disposed along the tracks .andadapted to interrupt the circuits ofthe circuit closers aforesaid, each circuit closer having a .ioating operating bar` operatively connected to a contact member adapted to vclose the circuit of the mechanism,A substantially as set-forth 13. In an electrically actuated gate for, railway crossings, the combination of a movable gate'arm, a motor operatively-connected thereto, a pole changer associated with said motor, a plurality of'electro-magnetic circuit closers,. operative in one direction only, disposedalong the tracks and connected with opposite terminals of the pole changer, and azcircuit interrupter, operative in one direcmechanism, substantially as set-forth.

14. In an electrically actuated gate for railway crossings, thecombination of a movable gate arm, la motor operatively connected thereto, a pole changerfassociated with said motor, a plurality vof electro-magnetic circuit closers, operative in one direction only, disposed along the tracks and connected with opposite terminals of the pole changer, a y

second-plurality of electro-magnetic circuit vclosers, :operative inl one. direction only,adis-' posed along the tracks'and connected to opposite terminals y'of `*they pole changer, the twopluralities of circuitxclosers being'a'rranged in reverse direction, and a series of circuit interrupters, operatlve 1n one direcf-tion only, V`disposed -along `the trajcks`I- and #adapted to interrupt the circuits of the circuit closers aforesaid, each circuit interrupter having a floating operating bar carrying a contact member adapted to open the circuithof the mechanism, substantially as setfort 15. In an electrically actuated gate for railway crossings, the combination of a movable gate arm, a motor operatively connected thereto, a pole changer associated with said motor, and a plurality of electro-magnetic circuit closers, operative in one direction only, disposed along the tracks and connected with opposite terminals of f the pole changer, each circuit closer having a floating operating bar, U-shaped in cross-section, operatively connected to a contact member adapted to close the circuit of the mechanism, substantially as set-forth.

16. In an electrically actuated gate for railway crossings, the combination of a mov-` able gate arm, a motor operatively connected thereto, a pole changer associated with said motor, a pluralityoelectroemagnetic circuit closers, operative in onef direction. only, disposed' along the ytracks and connected With opposite terminals-of'` the pole'. changer, and a circuit'interrupter, operative in one direction only, disposed along theptrac'ks and adapted to interruptthe circuit-of one of the circuit closersaforesaidyeach' circuit closer having a floating operatingvbar, U- shaped inl cross-section, operatively connected to a contact member adapted to close the circuit. of the mechanism, substantially as set-forth.

l?. ln an` electrically actuated gate for railway l crossings,-the `combination' of a movable gate arm, a motoroperativelyV connected thereto, `a pole changer associated .With said motor, a plurality of: electro-magnetic circuit clcsers,operative 4in one direction only, disposed Valong-the tracks and connected with opposite terminals of the pole changer, a second plurality of electro-magneticcircuit closers, operative-in one direction only, disposed along the tracks and connected to opposite terminals oft'hepole changer, the tivo pluralities o circuit'rclosers 'being arranged in reverse directions, and a series of circuit interrupters, operative in one direction. only, disposed: along the ytracks and adapted-to interrupt thecircuit of: the

circuit closers aforesaid, .each circuit closer .having a Hoa-ting operatingjbar, U-shaped 4in cross-section, operatively connected-to a Acontact member adapted to close the v circuit 'ofthe mechanism, substantially'as seteforth.

`1d. lnan electrically actuatedl gate for .railwaycrossinga the combination of a movable gate arm, aimotor operativelyconnected thereto, a pole changer associated With'y said motor,l av plurality of electro-inagn'eticy circuit closers, operativeinone directionfonly, disposed? al ongf .the ftracks v. and?? connected `with:y opposite terminals of.' the `pole` changer,

anda circuit .nterrupter,openative inwone 4direction only, disposedfalong.theitraclsfand adapted to interruptf the circuit. ottone-ofi .the circuit closersaforesaid, eachfv circuit interrupter havingfloating '.openating bar',l U-

shaped in cross-section,,carrying` ancontact vinenrber adapted f to f open V.the circuit ofi the mechanism, substanti ally-'as'. setz-forth'.

19." In an electrically' actuated gate for railway crossings',V the` coinoinationof:V a movablegate arm, a;motor.operatively'connected .oppositerterininals of the pole r changer, the

two pluialitiesr of' circuit @losers being-'arranged yin reverse directions, andvaaseries of 1 circuitl interrupters, operative;y in 'oiiei direction only, .disposed valongf the tracks and adapted :to interrupt .thecircuit of the circuit, closers aforesaid, each: circuitr'interrupter having a' ioating operatingbar, U-

shaped in cross-section, carryingza contact member adapted to openthecircuiteof the mechanism, substantially asset forth;-

Sifned at Chicago, ;Illinois,rthis5ei5th day of January, A iD. 19.1.6.-

isinoaol BETrriNa-ani. anelito aratro.

Gopies: cttlriis` .patent `vmay bei-obtained forrvecents each,v byaddressng the:0ommissioiier of Entente,

i l Washington, D. th 

